Valve



L. WASEM.

VALVE.

APPLICATION FILED JULY 26, 1920.

Patented Mar. 7, 1922.

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PATENT OFFICE.

LOUIS WASEM, OF MOUNT VERNON, INDIANA, ASSIGNOR TO GRAHAM VALVE COMPANY,OF MOUNT VERNON, INDIANA. I

VALVE.

T 0 all whom it may concern Be it known that 1, Louis WASEM, a

citizen of the United States, residing at b Mount Vernon, in the countyof Posey and State of Indiana, have invented certain new and usefulImprovements in Valves; and I do declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to- Which it appertains to make and' use thesame.

This invention relates to an improved valve and one object of theinvention is to provide improved means for guiding the valve ball intoproper engagement with the valve seat, and further so construct thismeans for guiding the valve ball that it a bushing element positionedbetween the valve ball and the stem thus protecting the valve ball fromgrinding when the stem is rotated to tightly close the valve.

Another object of the invention is to so construct this bushing cup thatit may be positioned between the valve ball and the lower end of thestem and permitted to have a certain amount of transverse movement thuspermitting the valve ball to be properly seated upon thevalve seat.

Another object of the invention is to so construct the valve stem thatthe bushing cup may be contained in a pocket formed in the head at thelower end of the stem, the bushing conforming to the contour of the balland having its upper end rounded and fitting intoa concave or dish seatformed in the head of the stem.

This improved valve construction is illustrated wherein:

Figure 1 is a vertical sectional view through a .valve having theimproved construction shown in connection therewith.

Figure 2 is a view showing the bushing cup removed from the valye andshown partially in side elevation and partially in section.

. This improved bushing cup is used in connection w1th a valve of thetype disclosed in Patent No. 1,182,166. It has been found that where thevalve ball is in direct contact with the head of the valve stem, theball will beb come ground and .worn thus preventing the ball from havingproper engagement with Specification of Letters Patent.

Application filed July 26,

in the accompanying drawings,

No. 1,158,483 and also in Patent Patented Mar. 7, 1922. 1920. Serial No.398,894.

the valve seat. Therefore after a valve in which the stem directlyengages the ball has een used for some time and the ball hasbecome'scratched and worn ,by the grinding engagement of the stem withthe ball in screwing the stem tightly into place, the valve will notshut ofl tightly but will leak. The valve shown is provided with ahousing 1 having an inlet 2 and an outlet 3. A valve seat 4 ispositioned between the inlet and the outlet and the housing extendsupwardly above the seat thus providing a neck 5 having a crown or bonnet6 removably connected therewith.

A- valve stem 7 extends through the crown 6 into the valve housing andhas threaded engagement with the crown as shown so that turning of thestem, the head 8 at the inner end of the stem 7 may be moved towards andaway from the seat 4. This head is hollowed from its inner end toprovide a pocket 9and the inner end of the head is redueed and threadedto carry a ring 10 from which extends prongs 11 engaging and thussupporting a valve ball 12 for seating upon the valve seat 4 when thestem is rotated and thus screwed into the housing. This valve ball 12extends up into the pocket 9 and is engaged by the cup or bushing 13which fits into the pocket as shown in Fig. 1. This bushing cup isrovided with a rounded upper end 14 w ich fits into a concaveseat 15. Itwill thus be seen that the cup 13 may rotate within the pocket 9 and mayalso have movement transversely therein. This cup is hollowed from itsinner end as shown in Figs. 1 and 2 and is ground to provide a seat 1 6.It will thus be seen that the lower end of the bushing cup will conformto the contour of the valve ball and may have roper engagement with theball. There the stem is rotated and thus screwed into the housing tobring the valve ball into engagement with the seat 4 continued rota-.tion of the stem to firmly seat the ball upon the valve seat 4 willcause the stem to turn upon the rounded upper end of the bushing cupinstead of turning upon the ball itself. Therefore, the ball will not beground off at one side or scarred and there will be no danger of thevalve leaking due to the valve eing worn or scratched.

'A structure has thus been provided which may be used in connection witha valve havshown in the patents above mentioned ing a conventionalconstruction such a;

an it is therefore not necessary to provide a special construction ofvalve in order to permit a valve to be provided with this improvedconstruction.

I claim:

1. In a valve, a housing having an inlet and an outlet, a valve seat inthe housing, a bonnet carried by the housing above the seat, a stemextending into the housing through the bonnet and'having threadedengagement with the bonnet, a head at the inner end of the stem hollowedand ground toprovide a concaved seat within the head, a valve ball,means carried by the head for engaging the ball and limiting downwardmovement of the ball, and a cup within the head having free movementtherein and having a convex upper end seated in the concaved seat, thecup being hollowed from its lower end and having its lower-,end groundto provide a concaved lower end engaging the ball and conforming to thecontour thereof.

2. In a valve, a housing having a valve seat therein, a valve stemextending into the housing above the seat and having threaded engagementwith the housing, a head at the inner end of the stem hollowed toprovide a pocket and ground to provide a concaved seat, a hollow cuploosely fitting in the ocket and having a rounded upper end itting intothe concaved seat and having its lower end ground to provide a concavedseat, and a valve ball rotatably held in engagement with the concavedseat at the lower end of the cup.

3. In a valve, a housing, a stem extending into and having threadedengagement with the housing a head for the lower end of the stem havinga pocket out in its lower end, a cup loose in the pocket having arounded upper end fitting into a concaved seat of the pocket and a valveball rotatably suspended beneath and engaging the cup, the lower end ofthe cup being ground to conform to the contour of the balL' 4. A valvestructure including a rotatable stem havinga head at its inner endhollowed to provide a pocket, a cup loosely mounted in the pocket, and avalve ball rotatably suspended beneath and engaged by the cup, the cuphaving its lower end ground to conform to the contour of the ball.

5. A valve structure including a rotatable stem, a valve ball rotatablysuspended beneath the stem, and a cup looselyfitting between the stemand ball and having its upper end rounded and fitting into a dlshed seatin the stem, the lower end of the cup engaging the ball and conformingto the contour thereof.

6. A valve structure including a rotatable stem, a head at the inner endof said stem, a valve ball rotatably suspended beneath said head, and acup loosely mounted between the ball and head and freely-rotatablewhereby the stem may rotate independent of the ball when the ball isresting upon avalve seat.

In testimony whereof I have hereunto set my hand.

LOUIS WASEM.

